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^ @eine :tetes atcnt @Hita Letters Patent No. 73,942, dated February 4, 1868.

IMPROVEMENT IN COOKING-STOVES.

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TO ALL Wil-IOM IAT MAY CONCERN:

Bo it known that we, FEDERAL O. ADAMS and Josera PncIroVIsn, both of Cincinnati, Hamilton county, Ohio, have invented Certain new and useful Improvements in Cooking-Stoves; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specieation, in which- Figure'l is a perspective view of astove containing our improvements.

Figure 2 is a longitudinal sectional View through the centre of the same.

' Figure 3 is a front view of theback plate of the stove, marked T, iig. 2.

Figured is a rear view of Vthe front oveuplate, marked K, fig. 2.

Figure 5 is a top vicw of' the plate, marked F, tig. 2. i

Figure 6 is a bottom view of the'top oven-plate, marked C, fig. 2.

Figure'T is a rear View of the re-baek, marked Q, tig.`2.

Figure 8 is a side view of the end plates of the rechamber, marked S, fig. 2.

Figure 9 is a sectional View of the same plates.

Figure 10 `is a top view of the adjustable cover, marked A, fig. 2.

Figure 11 is a. view in perspective of the plate, marked J, fig.` 2, with the open-grate frame anu register.

By the front or rear view of any plate is designated the view of such plate, when in its place, as it would appear when looking toward the front or rear of the stove. Parts ofthe stove are designated by capitals, while apertures for the admission or discharge of'air are designated by small letters. Like letters represent like parts in all the figures.

The nature of our invention consists in an apparatus for concentrating the flame and gases of wood or coalburning stoves for the purpose of facilitating their consumption by the application of atmospheric air; also, in u variety of devices for the admission, supply, and regulation of the supply of atmospheric air for the purpose of supplying oxygen to the concentrated 'smoke and gases, and thus effecting their combustion; and also in other improvements in the general construction of the stove.

The device for concentrating the smoke and gas, (and the term gas will be hereafter used as designating with brevity, all the unconsumed products liberated by the combustion of the consists of a. plate marked A, tige. 1,V 2, and 10, projecting over the fire-chamber throughout its entire length, as shown iu iig. 1. It may be made plain, as in fig. 1, in which case it is arranged to slide back and forth upon the top oven-plate C, and under the lugs D in the side plates, the length of the movement forward and backward being regulated by stops EE E on the plate A, the top oven-plate C, and the plate F above it; or it may be made stationary, in which case it can'be provided with sliding doors, as. at G, fig. 10, or with hinged doors, as at H, fig. 10, for the intro= duction of fuel. If desired, the space above the lire-chamber may be further contracted by the hinged flap or guard-plate B, figs. 1 and 2.

The oiice of the plate A, either alone or in connection with the flap B, is obviouslyto 'contract the space above the lire-chamber to along and comparatively narrow orifice, through which the gas must ascend, being thus measurable concentrated and ready for the direct application of air introduced tosupply it with oxygen and effect its combustion'. f

The 'devices for admitting and heating air are as follows: The plate below the ash-pan is doubled by the Af introduction of a false bottom, I, fig. 2, forming a shallow'chamber to which air is admitted through a series of holes along the front edge, one of which is shown at a. Upon this false bottom is placed the plate J, figs. 2 and 11, so constructed and located as to leave a space between it and the front and side oven-plates K and L, gs. 1 and 2. Air enters all portions of this space, from the space under the false bottom already described, through a narrow slot, b. Upon the plated is mounted the open-grate frame M, iig. 11, which closes the spaces between the plate J, and front loven and side plates, but iu which are apertures, c, opened and closed by a regis`= ter, N, and apertures, d d, the otlice of which will vbe described hereafter. In the frame M are depressions, figs. 2 and 11, to receive lugs upon'the grate P, 5g. 2. The aiI` which is allowed to pass through the register N, enters the space between the front oven-plate K and the double reback Q, gs. 2 and 7. Some of it will pass through the apertures c e e e iutovthe space betweenthe two plates Q and Q formingthe vdouble re-back, and be thence delivered by aperturesf at the top, and the remainder will pass up the space behind the tire-back,

between it and the front oven-plate, to the register R, tig. 2, through the apertures of which it is delivered under the plate A. This register, however, is n'ot essential, and it may be omitted; in which case, the air will pass through the slotted opening which the register now covers.

The e'nds of the lire-chamber are formed of plates, S, figs. 2, 8, and 9, which are also made double, either in whole or in part, as shown in tig. 9, by plates and S. There is a spacebetwecn these end plates, whether single or double, and the side plates of the stove, into whichair is introduced through the aperture g in the front ofthe stove, and from which it is discharged through aperture L in the plate S, figs. 2 and 8. The double portion or iiue does not extend so far forward as the aperture h. Into this iue formed by platos S and S', tig. 9, air enters through apertures dit, fig. 11, in the grate-framc-and corresponding apertures d d', tig. 9, in the bottom of the'iiue, passes up through the space between the iues, and is discharged through aperture K, figs. 2, 8, and 9, under plate A.

Another chamber for the admission of air is formed by the plate F, figs. 2 and 5, placed over the topovenplate C, figs. 2 and 6, and forming a space between the two, as shown in g. 2. To thisspace air enters through apertures mm m in the side 'ol' the stove, through openings n in the rear and top of the stove, from all of which it is conducted by tubes U U, iig. 5, to the space between the plates. Itis admitted, also, through apertures i plate A, substantially as described.

O 0 O in the rear of the stove, iig. 3, into a chamber, V, shown in iig. 3, and by dotted lines in fig. 2, from which it is delivered by the line or pipe W into the space betweenthe plates, above described. Having entered this space from either or all of these sources, the air passes downward through aperture r, fig. 2, into a chamber formed by the plate C on the lower side of the oven-top C, figs. 2-and 6. Thence it passes through the aperture S to the register It, from the openings in which it isdelivered below the plate A.

Air may also be admitted through the oven, entering from the 'rear of the stove through the S-shaperl pipe X, igs. 2 and 3, in the back flue-strips, having an entrance-aperture at t, in the back plate of the stove, and an exit-aperture e, into the back plate of the oven. From the oven, the air is delivered through the register Y,

gs. 2 and 4, into the space between the front oven-plate K andthe double tire-back Q, and is thence discharged through register R.

A hinged damper or check-plate, Z, is used to regulate the draught. rEhe outer end or journal of this plate is cone-shaped, so that when turned it may be thrust outward and wedged in' the holewhich serves as a bearing, thus retaining it in place in any position.

The irnprovements in the coristruction of the stove consist in the application to a cooking-stove of the sliding lid A a, fig. 1, sliding under the top plate, or of Vthe register-lid B b, iig. 1, bythe use of which the heat to' be applied to the cookingutensils may be regulated or shut o altogether without the necessity of removing or replacing the entire lid. Also, in the sliding hearth-plates Cc C c, figs. 1.and 2, which slide laterally under the bottom plate; and, in the rolling hearth-plate D d, which is drawn forward upon the slides Ec, until the hinges Ff engage the sockets Gg, when the front of the plate is allowed to drop down out of the'way.

lVhat we claim as our invention, and desire to secure by Lettcrslatent, is-

1. The horizontal concentrating plate A, stationary or movable, and with or without fuel-doors, substan-v tially as and for the purposes described.

2.l The ap or guard-plate-B, whether stationary or movable, substantially as and for the purposes described. 3. The spaces between the tire-back and sides and the front oven and side plates, in combination with thc 4. The chamber above the top oven-plate and below the top iiue formed by plates U and C', substantially as and for the purposedescribed.

5. The hollow or double hre-back Q, substantially as described. 6. The air-chamber under the'grate and ash-pot formed by the false bottom I, substantially as described. i 7. The chamber between the front oven-plate and {ire-back, in combination with the open-grate frame and plate A. 8. The hollow side plates S S', substantially as described. 9. The register` R, in combination with the fire-back and front oven-plate, substantially as described. 10. The register N, in combination with the opensgrate frame, substantially as described. 11. The sliding lid Aa, in combination with a cooking-stove, substantially as described. 12. The rolling hearth-plate D cl, operating substantially as described. 13. The hearth-plates E e, sliding laterally under the bottom plate, substantially as described.

FEDERAL C. ADAMS, JOSEPH PECKOVER. Witnesses:

J. F. Cnossu'rru, JAMES Moena. 

